2003 Chevy Suburban, Put it into drive, went about ten feet and then heard a clunking noise and the truck wouldn't move forward. Put into reverse to move out of road, let idle and the truck moved slowly backwards, but heard light clunking a couple of times. The engine sounds good, the clunking sounded from underneath. Husband is deployed, looking for answers before taking to dealership. Thanks

SOURCE: while driving truck makes a humming sound in drive now no reverse

If you have no reverse then yes it needs to be rebuilt. as far as the whining it could be in one of the differentials. or in trans? just depends on where you hear it

SOURCE: Clunking noise from underneath truck

Sounds like a bad ujoint.

SOURCE: my truck turns on but does not move forward

my ford truck reverse and turns on but it wont drive?

Harvey N Tawatao

• 3854 Answers
• Posted on Jul 13, 2009

SOURCE: 1999 Chevy Silverado with clunking/jerking in the back

It sounds like your 4WD is still engaged and you need to have it serviced. It's common for the 4wd to get stuck in the on position with the button pushed to the 2wd mode. As you turn the front wheels are binding with the rear wheels. There is a vacuum switch on top if the transfer case on the drivers side that may have gone bad and needs to be replaced. You can pick it up at Auto Zone for $25.00 and $85.00 at the dealer, there is three vacuum hose attached to it that needs to be disconnected and then the switch can be un screwed from the transfer case like a spark plug.. Good luck and hope this helps. keep me posted, be glad to answer any question you may have. 

SOURCE: car does not drive forward but works in reverse

Sad to say but your automatic transmission has bit the dust.